Starrett 54584 A2 Tool Steel Flat Stock 1/4x4x36 in

Product Description

The STARRETT 54584 is an A2 air-hardening tool steel flat stock bar used in toolmaking, die making, and precision machining applications. Measuring 0.25 inches thick, 4 inches wide, and 36 inches long, this flat stock is ground and held to tight dimensional tolerances, including a thickness tolerance of plus or minus 0.001 inches and a width tolerance of plus 0.000 to 0.005 inches. A2 tool steel offers good wear resistance, moderate toughness, and stable air-hardening properties, making it a preferred material for punches, dies, gauges, and cutting tools. Weighing approximately 11.72 pounds per bar, this stock is ready for layout and machining.

This flat stock is suited for tool rooms, machine shops, and fabrication facilities requiring precision-ground A2 tool steel in a readily usable bar form. Typical applications include die components, form tooling, stripper plates, and fixture components where dimensional accuracy and hardenability are critical. The 36-inch length allows for multiple part blanks to be cut from a single bar, reducing material waste in high-tolerance tooling work.

Key Features

• A2 air-hardening tool steel — stable hardening with minimal distortion during heat treatment
• Thickness tolerance of plus or minus 0.001 inches for consistent stock removal and fit
• Width tolerance of plus 0.000 to 0.005 inches
• Length tolerance of plus 0.25 inches
• Squareness: edge — all 0.003 per inch
• Ground flat stock form — ready for layout, drilling, and machining without additional surface prep

Compatibility

Designed as a standard A2 air-hardening tool steel flat stock bar suitable for general toolmaking, die making, and precision machining applications where AISI A2 material specification is required.

Installation Notes

Cutting, grinding, and heat treatment of tool steel should be performed by qualified machinists or tool and die makers using appropriate equipment and personal protective equipment. A2 tool steel is air-hardened — follow the material manufacturer's heat treatment guidelines for austenitizing and hardening temperatures, and allow proper air cooling to avoid cracking. Machining operations should be completed prior to hardening where possible. Always de-burr cut edges before handling.